don't spam users when Vim is started with Vi compatibility mode

Fixes #1982

autoload/ctrlp/decls.vim

@@ -1,3 +1,7 @@
+" don't spam the user when Vim is started in Vi compatibility mode
+let s:cpo_save = &cpo
+set cpo&vim
+
 let s:go_decls_var = {
       \  'init':   'ctrlp#decls#init()',
       \  'exit':   'ctrlp#decls#exit()',
@@ -143,4 +147,8 @@ function! ctrlp#decls#cmd(mode, ...) abort
   return s:id
 endfunction
 
+" restore Vi compatibility settings
+let &cpo = s:cpo_save
+unlet s:cpo_save
+
 " vim: sw=2 ts=2 et

autoload/fzf/decls.vim

@@ -1,3 +1,7 @@
+" don't spam the user when Vim is started in Vi compatibility mode
+let s:cpo_save = &cpo
+set cpo&vim
+
 function! s:code(group, attr) abort
   let code = synIDattr(synIDtrans(hlID(a:group)), a:attr, "cterm")
   if code =~ '^[0-9]\+$'
@@ -146,4 +150,8 @@ function! fzf#decls#cmd(...) abort
         \ }))
 endfunction
 
+" restore Vi compatibility settings
+let &cpo = s:cpo_save
+unlet s:cpo_save
+
 " vim: sw=2 ts=2 et

autoload/go/alternate.vim

@@ -1,3 +1,7 @@
+" don't spam the user when Vim is started in Vi compatibility mode
+let s:cpo_save = &cpo
+set cpo&vim
+
 " Test alternates between the implementation of code and the test code.
 function! go#alternate#Switch(bang, cmd) abort
   let file = expand('%')
@@ -24,4 +28,8 @@ function! go#alternate#Switch(bang, cmd) abort
   endif
 endfunction
 
+" restore Vi compatibility settings
+let &cpo = s:cpo_save
+unlet s:cpo_save
+
 " vim: sw=2 ts=2 et

autoload/go/asmfmt.vim

@@ -15,6 +15,10 @@
 "
 "       Flag to automatically call :Fmt when file is saved.
 
+" don't spam the user when Vim is started in Vi compatibility mode
+let s:cpo_save = &cpo
+set cpo&vim
+
 let s:got_fmt_error = 0
 
 " This is a trimmed-down version of the logic in fmt.vim.
@@ -65,4 +69,8 @@ function! go#asmfmt#ToggleAsmFmtAutoSave() abort
   call go#util#EchoProgress("auto asmfmt disabled")
 endfunction
 
+" restore Vi compatibility settings
+let &cpo = s:cpo_save
+unlet s:cpo_save
+
 " vim: sw=2 ts=2 et

autoload/go/cmd.vim

@@ -1,3 +1,7 @@
+" don't spam the user when Vim is started in Vi compatibility mode
+let s:cpo_save = &cpo
+set cpo&vim
+
 function! go#cmd#autowrite() abort
   if &autowrite == 1 || &autowriteall == 1
     silent! wall
@@ -282,4 +286,8 @@ function! s:cmd_job(args) abort
   call go#job#Spawn(a:args.cmd, a:args)
 endfunction
 
+" restore Vi compatibility settings
+let &cpo = s:cpo_save
+unlet s:cpo_save
+
 " vim: sw=2 ts=2 et

autoload/go/cmd_test.vim

@@ -1,3 +1,7 @@
+" don't spam the user when Vim is started in Vi compatibility mode
+let s:cpo_save = &cpo
+set cpo&vim
+
 func! Test_GoBuildErrors()
   try
     let l:filename = 'cmd/bad.go'
@@ -27,4 +31,8 @@ func! Test_GoBuildErrors()
   endtry
 endfunc
 
+" restore Vi compatibility settings
+let &cpo = s:cpo_save
+unlet s:cpo_save
+
 " vim: sw=2 ts=2 et

autoload/go/complete.vim

@@ -1,3 +1,7 @@
+" don't spam the user when Vim is started in Vi compatibility mode
+let s:cpo_save = &cpo
+set cpo&vim
+
 function! s:gocodeCommand(cmd, args) abort
   let l:gocode_bin = "gocode"
   let l:gomod = go#util#gomod()
@@ -250,4 +254,8 @@ function! go#complete#ToggleAutoTypeInfo() abort
   call go#util#EchoProgress("auto type info enabled")
 endfunction
 
+" restore Vi compatibility settings
+let &cpo = s:cpo_save
+unlet s:cpo_save
+
 " vim: sw=2 ts=2 et

autoload/go/complete_test.vim

@@ -1,3 +1,7 @@
+" don't spam the user when Vim is started in Vi compatibility mode
+let s:cpo_save = &cpo
+set cpo&vim
+
 func! Test_GetInfo()
     let l:filename = 'complete/complete.go'
     let l:tmp = gotest#load_fixture(l:filename)
@@ -17,4 +21,8 @@ func! Test_GetInfo()
     unlet g:go_info_mode
 endfunction
 
+" restore Vi compatibility settings
+let &cpo = s:cpo_save
+unlet s:cpo_save
+
 " vim: sw=2 ts=2 et

autoload/go/config.vim

@@ -1,3 +1,7 @@
+" don't spam the user when Vim is started in Vi compatibility mode
+let s:cpo_save = &cpo
+set cpo&vim
+
 function! go#config#AutodetectGopath() abort
 	return get(g:, 'go_autodetect_gopath', 0)
 endfunction
@@ -445,4 +449,8 @@ if exists("g:go_gorename_prefill") && g:go_gorename_prefill == 1
   unlet g:go_gorename_prefill
 endif
 
+" restore Vi compatibility settings
+let &cpo = s:cpo_save
+unlet s:cpo_save
+
 " vim: sw=2 ts=2 et

autoload/go/coverage.vim

@@ -1,3 +1,7 @@
+" don't spam the user when Vim is started in Vi compatibility mode
+let s:cpo_save = &cpo
+set cpo&vim
+
 let s:toggle = 0
 
 " Buffer creates a new cover profile with 'go test -coverprofile' and changes
@@ -286,4 +290,8 @@ function! s:coverage_browser_callback(coverfile, job, exit_status, data)
   call delete(a:coverfile)
 endfunction
 
+" restore Vi compatibility settings
+let &cpo = s:cpo_save
+unlet s:cpo_save
+
 " vim: sw=2 ts=2 et

autoload/go/debug.vim

@@ -1,3 +1,7 @@
+" don't spam the user when Vim is started in Vi compatibility mode
+let s:cpo_save = &cpo
+set cpo&vim
+
 scriptencoding utf-8
 
 if !exists('s:state')
@@ -944,4 +948,8 @@ endfunction
 sign define godebugbreakpoint text=> texthl=GoDebugBreakpoint
 sign define godebugcurline text== linehl=GoDebugCurrent texthl=GoDebugCurrent
 
+" restore Vi compatibility settings
+let &cpo = s:cpo_save
+unlet s:cpo_save
+
 " vim: sw=2 ts=2 et

autoload/go/decls.vim

@@ -1,3 +1,7 @@
+" don't spam the user when Vim is started in Vi compatibility mode
+let s:cpo_save = &cpo
+set cpo&vim
+
 function! go#decls#Decls(mode, ...) abort
   let decls_mode = go#config#DeclsMode()
   if decls_mode == 'ctrlp'
@@ -15,4 +19,8 @@ function! go#decls#Decls(mode, ...) abort
   end
 endfunction
 
+" restore Vi compatibility settings
+let &cpo = s:cpo_save
+unlet s:cpo_save
+
 " vim: sw=2 ts=2 et

autoload/go/def.vim

@@ -1,3 +1,7 @@
+" don't spam the user when Vim is started in Vi compatibility mode
+let s:cpo_save = &cpo
+set cpo&vim
+
 let s:go_stack = []
 let s:go_stack_level = 0
 
@@ -314,4 +318,8 @@ function s:def_job(args, state) abort
   call go#job#Start(a:args.cmd, l:start_options)
 endfunction
 
+" restore Vi compatibility settings
+let &cpo = s:cpo_save
+unlet s:cpo_save
+
 " vim: sw=2 ts=2 et

autoload/go/def_test.vim

@@ -1,3 +1,7 @@
+" don't spam the user when Vim is started in Vi compatibility mode
+let s:cpo_save = &cpo
+set cpo&vim
+
 func! Test_jump_to_declaration_guru() abort
   try
     let l:filename = 'def/jump.go'
@@ -63,4 +67,8 @@ func! Test_Jump_leaves_lists() abort
   endtry
 endfunc
 
+" restore Vi compatibility settings
+let &cpo = s:cpo_save
+unlet s:cpo_save
+
 " vim: sw=2 ts=2 et

autoload/go/doc.vim

@@ -2,6 +2,10 @@
 " Use of this source code is governed by a BSD-style
 " license that can be found in the LICENSE file.
 
+" don't spam the user when Vim is started in Vi compatibility mode
+let s:cpo_save = &cpo
+set cpo&vim
+
 let s:buf_nr = -1
 
 function! go#doc#OpenBrowser(...) abort
@@ -189,4 +193,8 @@ function! s:godocWord(args) abort
   return [pkg, exported_name]
 endfunction
 
+" restore Vi compatibility settings
+let &cpo = s:cpo_save
+unlet s:cpo_save
+
 " vim: sw=2 ts=2 et

autoload/go/fillstruct.vim

@@ -1,3 +1,7 @@
+" don't spam the user when Vim is started in Vi compatibility mode
+let s:cpo_save = &cpo
+set cpo&vim
+
 function! go#fillstruct#FillStruct() abort
   let l:cmd = ['fillstruct',
       \ '-file', bufname(''),
@@ -61,4 +65,8 @@ function! go#fillstruct#FillStruct() abort
   endtry
 endfunction
 
+" restore Vi compatibility settings
+let &cpo = s:cpo_save
+unlet s:cpo_save
+
 " vim: sw=2 ts=2 et

autoload/go/fillstruct_test.vim

@@ -1,3 +1,7 @@
+" don't spam the user when Vim is started in Vi compatibility mode
+let s:cpo_save = &cpo
+set cpo&vim
+
 func! Test_fillstruct() abort
   try
     let l:tmp = gotest#write_file('a/a.go', [
@@ -87,4 +91,8 @@ func! Test_fillstruct_two_cursor() abort
   endtry
 endfunc
 
+" restore Vi compatibility settings
+let &cpo = s:cpo_save
+unlet s:cpo_save
+
 " vim: sw=2 ts=2 et

autoload/go/fmt.vim

@@ -5,6 +5,10 @@
 " fmt.vim: Vim command to format Go files with gofmt (and gofmt compatible
 " toorls, such as goimports).
 
+" don't spam the user when Vim is started in Vi compatibility mode
+let s:cpo_save = &cpo
+set cpo&vim
+
 "  we have those problems :
 "  http://stackoverflow.com/questions/12741977/prevent-vim-from-updating-its-undo-tree
 "  http://stackoverflow.com/questions/18532692/golang-formatter-and-vim-how-to-destroy-history-record?rq=1
@@ -211,4 +215,8 @@ function! go#fmt#ToggleFmtAutoSave() abort
   call go#util#EchoProgress("auto fmt enabled")
 endfunction
 
+" restore Vi compatibility settings
+let &cpo = s:cpo_save
+unlet s:cpo_save
+
 " vim: sw=2 ts=2 et

autoload/go/fmt_test.vim

@@ -1,3 +1,7 @@
+" don't spam the user when Vim is started in Vi compatibility mode
+let s:cpo_save = &cpo
+set cpo&vim
+
 func! Test_run_fmt() abort
   let actual_file = tempname()
   call writefile(readfile("test-fixtures/fmt/hello.go"), actual_file)
@@ -46,4 +50,8 @@ func! Test_goimports() abort
   call assert_equal(expected, actual)
 endfunc
 
+" restore Vi compatibility settings
+let &cpo = s:cpo_save
+unlet s:cpo_save
+
 " vim: sw=2 ts=2 et

autoload/go/guru.vim

@@ -1,5 +1,9 @@
 "  guru.vim -- Vim integration for the Go guru.
 
+" don't spam the user when Vim is started in Vi compatibility mode
+let s:cpo_save = &cpo
+set cpo&vim
+
 " guru_cmd returns a dict that contains the command to execute guru. args
 " is dict with following options:
 "  mode        : guru mode, such as 'implements'
@@ -586,4 +590,8 @@ function! go#guru#Scope(...) abort
   endif
 endfunction
 
+" restore Vi compatibility settings
+let &cpo = s:cpo_save
+unlet s:cpo_save
+
 " vim: sw=2 ts=2 et

autoload/go/guru_test.vim

@@ -1,3 +1,7 @@
+" don't spam the user when Vim is started in Vi compatibility mode
+let s:cpo_save = &cpo
+set cpo&vim
+
 function Test_GuruScope_Set() abort
   silent call go#guru#Scope("example.com/foo/bar")
   let actual = go#config#GuruScope()
@@ -12,4 +16,8 @@ function Test_GuruScope_Set() abort
   endif
 endfunction
 
+" restore Vi compatibility settings
+let &cpo = s:cpo_save
+unlet s:cpo_save
+
 " vim: sw=2 ts=2 et

autoload/go/highlight_test.vim

@@ -1,3 +1,7 @@
+" don't spam the user when Vim is started in Vi compatibility mode
+let s:cpo_save = &cpo
+set cpo&vim
+
 function! Test_gomodVersion_highlight() abort
   try
     syntax on
@@ -92,4 +96,8 @@ function! Test_gomodVersion_incompatible_highlight() abort
   endtry
 endfunc
 
+" restore Vi compatibility settings
+let &cpo = s:cpo_save
+unlet s:cpo_save
+
 " vim: sw=2 ts=2 et